Enables COM+ object construction support. This class cannot be inherited.
Assembly: System.EnterpriseServices (in System.EnterpriseServices.dll)
This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)
Returns the hash code for this instance.(Inherited from Attribute.)
When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)
When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)
Returns a string that represents the current object.(Inherited from Object.)
|_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)|
Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)
|_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)|
Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)
Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)
|_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)|
Provides access to properties and methods exposed by an object.(Inherited from Attribute.)
The following code example demonstrates the use of this attribute to associate an object constructor string with a ServicedComponent class.
' Accept a constructor string. <ConstructionEnabled()> _ Public Class EmployeeInformation Inherits ServicedComponent ' The employee's user name and salary. Private accountName As String Private salary As Double = 0 ' Get the employee's name. All users can call this method. Public Function GetName() As String Return accountName End Function 'GetName ' Set the employee's salary. Only managers can do this. Public Sub SetSalary(ByVal ammount As Double) If SecurityCallContext.CurrentCall.IsCallerInRole("Manager") Then salary = ammount Else Throw New UnauthorizedAccessException() End If End Sub 'SetSalary ' Get the employee's salary. Only the employee and managers can do this. Public Function GetSalary() As Double If SecurityCallContext.CurrentCall.DirectCaller.AccountName = accountName OrElse SecurityCallContext.CurrentCall.IsCallerInRole("Manager") Then Return salary Else Throw New UnauthorizedAccessException() End If End Function 'GetSalary ' Use the constructor string. ' This method is called when the object is instantiated. Protected Overrides Sub Construct(ByVal constructorString As String) accountName = constructorString End Sub 'Construct End Class 'EmployeeInformation
Available since 1.1
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.